We propose a decentralized receiver for extra-large multiple-input multiple-output (XL-MIMO) arrays. Our method operates with no central processing unit (CPU) and all the signal detection tasks are done in distributed nodes. We exploit a combined message-passing framework to design an uncoordinated detection scheme that overcomes three major challenges in the XL-MIMO systems: computational complexity, scalability and non-stationarities in user energy distribution. Our numerical evaluations show a significant performance improvement compared to benchmark distributed methods while operating very close to the centralized receivers.
翻译:我们建议为超大型多投入多产出(XL-MIMO)阵列建立一个分散接收器。我们的方法没有中央处理器,所有信号检测任务都是在分布式节点中完成的。我们利用一个联合信息传输框架设计一个不协调的检测计划,以克服XL-MIMO系统中的三大挑战:计算复杂性、可缩放性以及用户能源分布中的非静止性。我们的数字评估显示,与基准分布式方法相比,我们的工作表现显著改进,同时运行非常接近集中式接收器。